Refrigerated display cabinet with independent air curtain

The invention relates to a refrigerated display cabinet with an independent air curtain, which belongs to the technical field of air curtain cabinets and comprises a cabinet body, a storage plate, a fan and an evaporator. A refrigeration cavity, a fan mounting cavity and a first air supply channel are arranged in the cabinet body, the refrigeration cavity is provided with a first air supply outlet, and the first air supply channel communicates with the refrigeration cavity and the fan mounting cavity; the storage plates are distributed in the refrigeration cavity, and the interior of each storage plate is divided into a first cavity and a second cavity; the second cavities of the other storage plates except the lowermost storage plate are all communicated with the first air supply channel, and second air supply openings are formed in the bottom surfaces of the storage plates; a first air return opening is formed in the top surface of each storage plate; the first air return port of the uppermost storage plate